clk_core.v

32位单精度浮点加法器

// file: clk_core.v
// 
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//----------------------------------------------------------------------------
// User entered comments
//----------------------------------------------------------------------------
// None
//
//----------------------------------------------------------------------------
// Output     Output      Phase    Duty Cycle   Pk-to-Pk     Phase
// Clock     Freq (MHz)  (degrees)    (%)     Jitter (ps)  Error (ps)
//----------------------------------------------------------------------------
// CLK_OUT1    27.000      0.000      50.0      200.000     60.000
// CLK_OUT2    27.000      0.000      50.0      940.740     60.000
//
//----------------------------------------------------------------------------
// Input Clock   Input Freq (MHz)   Input Jitter (UI)
//----------------------------------------------------------------------------
// primary          27.000            0.010

`timescale 1ps/1ps

(* CORE_GENERATION_INFO = "clk_core,clk_wiz_v3_1,{component_name=clk_core,use_phase_alignment=true,use_min_o_jitter=false,use_max_i_jitter=false,use_dyn_phase_shift=false,use_inclk_switchover=false,use_dyn_reconfig=false,feedback_source=FDBK_AUTO,primtype_sel=DCM_SP,num_out_clk=2,clkin1_period=37.037,clkin2_period=37.037,use_power_down=false,use_reset=true,use_locked=true,use_inclk_stopped=false,use_status=false,use_freeze=false,use_clk_valid=false,feedback_type=SINGLE,clock_mgr_type=AUTO,manual_override=true}" *)
module clk_core
 (// Clock in ports
  input         CLK_IN1,
  // Clock out ports
  output        CLK_OUT1,
  output        CLK_OUT2,
  // Status and control signals
  input         RESET,
  output        LOCKED
 );

  // Input buffering
  //------------------------------------
  IBUFG clkin1_buf
   (.O (clkin1),
    .I (CLK_IN1));


  // Clocking primitive
  //------------------------------------

  // Instantiation of the DCM primitive
  //    * Unused inputs are tied off
  //    * Unused outputs are labeled unused
  wire        psdone_unused;
  wire        locked_int;
  wire [7:0]  status_int;
  wire clkfb;
  wire clk0;
  wire clkfx;

  DCM_SP
  #(.CLKDV_DIVIDE          (2.000),
    .CLKFX_DIVIDE          (2),
    .CLKFX_MULTIPLY        (2),
    .CLKIN_DIVIDE_BY_2     ("FALSE"),
    .CLKIN_PERIOD          (37.037),
    .CLKOUT_PHASE_SHIFT    ("NONE"),
    .CLK_FEEDBACK          ("1X"),
    .DESKEW_ADJUST         ("SYSTEM_SYNCHRONOUS"),
    .PHASE_SHIFT           (0),
    .STARTUP_WAIT          ("FALSE"))
  dcm_sp_inst
    // Input clock
   (.CLKIN                 (clkin1),
    .CLKFB                 (clkfb),
    // Output clocks
    .CLK0                  (clk0),
    .CLK90                 (),
    .CLK180                (),
    .CLK270                (),
    .CLK2X                 (),
    .CLK2X180              (),
    .CLKFX                 (clkfx),
    .CLKFX180              (),
    .CLKDV                 (),
    // Ports for dynamic phase shift
    .PSCLK                 (1'b0),
    .PSEN                  (1'b0),
    .PSINCDEC              (1'b0),
    .PSDONE                (),
    // Other control and status signals
    .LOCKED                (locked_int),
    .STATUS                (status_int),
 
    .RST                   (RESET),
    // Unused pin- tie low
    .DSSEN                 (1'b0));

    assign LOCKED = locked_int;

  // Output buffering
  //-----------------------------------
  assign clkfb = CLK_OUT1;

  BUFG clkout1_buf
   (.O   (CLK_OUT1),
    .I   (clk0));


  assign CLK_OUT2 = clkfx;



endmodule